Last updated: June 2, 2025
In Willis, Texas, awareness of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you take necessary precautions against sunburn and long-term skin damage, especially during the peak hours of midday sun. With a Cfa climate, Willis experiences high UV exposure, particularly between 11 AM and 2 PM, when the UV Index can soar to 11, indicating extreme risk. By familiarizing yourself with local UV fluctuations, you can ensure your sun safety while enjoying the beautiful outdoor activities that Willis has to offer.
The UV Index for the day showcases a striking pattern, starting moderate at 7:00 AM with a value of 1. As the sun climbs higher, the index steadily rises, hitting 3 by 9:00 AM, and then surging to a peak of 11 between 1:00 PM and 2:00 PM. This indicates a high risk of harm from unprotected sun exposure during midday. Following the peak, the UV Index gradually declines to 4 by 5:00 PM and further decreases to 1 by 7:00 PM, emphasizing the critical importance of sun protection during the intense midday hours. It’s advisable to seek shade and wear sunscreen if you're outside during the peak period!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 1 | low | 45 min |
09:00 | 3 | moderate | 30 min |
10:00 | 5 | moderate | 30 min |
11:00 | 8 | very high | 15 min |
12:00 | 10 | very high | 15 min |
13:00 | 11 | extreme | 10 min |
14:00 | 11 | extreme | 10 min |
15:00 | 9 | very high | 15 min |
16:00 | 7 | high | 25 min |
17:00 | 4 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
The UV Index demonstrates significant seasonal variations, with pronounced increases from late winter into summer. February through August represent the highest risk months, particularly from April to July, when the UV Index reaches its peak at 12 and falls into the extreme exposure category. During these months, the recommended burn time is as short as 10 minutes, necessitating vigilant sun protection strategies. Residents and visitors are advised to wear broad-spectrum sunscreen, hats, and protective clothing, and to seek shade during peak sun hours, particularly between 10 AM and 4 PM. As the fall approaches, the UV Index gradually decreases, with November and December offering more moderate levels, allowing for safer outdoor activities.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chicago UVI | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
Brooklyn UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
New York City UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
Willis | 5 | 8 | 9 | 11 | 11 | 11 | 12 | 11 | 10 | 8 | 6 | 5 |
Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |